[PDI] Uneven Pitch Spring (Large Diameter) for 430mm Barrels / Tokyo Marui VSR-10

New unequal pitch coils manufactured by machine using the latest technology
This is the latest model of PDI unequal pitch springs, which have received high praise worldwide.
Made of silicon chrome, it is resistant to wear and tear and can be used stably for a long period of time.

The specifications have changed from the previous product, and the new springs now have various inner barrel lengths as output guidelines.
This product is designed to produce approximately 0.9J when used under the following conditions. Please be sure to check the length of the inner barrel before use.
If the inner barrel length is not appropriate, the output may be higher or lower than the recommended value.
Even if the configuration is the same as the output measurement conditions, the initial velocity will change depending on the altitude and airtightness.
After customization, please measure the initial velocity immediately.

PDI output measurement conditions
Inner barrel: 6.05 inner barrel 430mm
Packing: W-hold packing hardness 50
Cylinder: Precision Cylinder Set VC
Chamber: HOP UP Chamber Ver.2
Measurements were taken inside PDI under the above conditions.

specification
Output guideline: 0.9J
Material: Silicon chrome steel
Pitch: Uneven pitch
Manufacturing method: Machine-wound
Spring diameter: Large diameter

Compatible models:
#PDI Precision Cylinder Series for Tokyo Marui VSR10

★☆★Please be careful with the output★☆★
Please pay particular attention to the following:
- Make sure that the length of the inner barrel is the appropriate length.
- Please check that the combination of each part complies with the PDI measurement conditions.
- Please perform the installation work properly.
・Please make sure you are fully familiar with the output before purchasing. By purchasing this product, you are deemed to have understood the output.
This product is a part that greatly affects the initial velocity of an airsoft gun.
After installation, be sure to immediately check the initial velocity using a bullet speed meter.
Under Japanese law, airsoft guns with a caliber of 0.989J or more are considered quasi-air guns and possession is prohibited.
*Testing has been carried out using only PDI parts.
This output-related part is not designed to be used in combination with parts from other manufacturers.
please note.


※please note※
If you have customized your airsoft gun or replaced parts, be sure to measure the bullet speed using a bullet speed meter to ensure it is within the legal limit (possession of bullets over 0.98 J is prohibited). Also, be careful not to exceed the legal limit during the work.